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Java > Open Source Codes > org > apache > tapestry > vlib > ActivateCallback


1 // Copyright 2004 The Apache Software Foundation
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 package org.apache.tapestry.vlib;
16
17 import org.apache.tapestry.IRequestCycle;
18 import org.apache.tapestry.callback.ICallback;
19
20 /**
21  * Callback implementation for pages which implement
22  * the {@link org.apache.tapestry.vlib.IActivate}
23  * interface.
24  *
25  * @author Howard Lewis Ship
26  * @version $Id: ActivateCallback.java,v 1.5 2004/02/19 17:37:49 hlship Exp $
27  * @since 3.0
28  *
29  **/
30
31 public class ActivateCallback implements ICallback
32 {
33     private String JavaDoc _pageName;
34
35     public ActivateCallback(IActivate page)
36     {
37         this(page.getPageName());
38     }
39
40     public ActivateCallback(String JavaDoc pageName)
41     {
42         _pageName = pageName;
43     }
44
45     public void performCallback(IRequestCycle cycle)
46     {
47         IActivate page = (IActivate) cycle.getPage(_pageName);
48
49         page.validate(cycle);
50         page.activate(cycle);
51     }
52 }
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